Condensate pump motor vibration damping device

Abstract

This application discloses a vibration damping device for a condensate pump motor, relating to the field of pump vibration damping technology. Its key technical features include: a support base mounted on the condensate pump motor, a vibration damping device installed on the support base, and a receiving chamber inside the vibration damping device; a damping fluid is provided within the receiving chamber of the vibration damping device, and the damping fluid can flow freely within the vibration damping device; the vibration damping device is fixedly connected to the support base, and the support base is fixedly connected to the condensate pump motor; a protective shell is installed on the outer side of the vibration damping device. When the vibration damping device of this application is installed on the condensate pump motor, the damping fluid inside the vibration damping device can absorb vibrations by utilizing the damping effect generated during the shaking caused by the vibration of the condensate pump motor, thereby reducing the vibration of the condensate pump motor itself during use.

Description

Technical Field

[0001] This application relates to the field of water pump vibration reduction technology, and in particular to a vibration reduction device for a condensate pump motor. Background Technology

[0002] In thermal power generation, chemical industry, and other fields, condensate pump motors serve as key auxiliary equipment, transporting condensate from the condenser to the boiler or reaction system to maintain stable operation of the thermodynamic cycle. Therefore, the stability of their operation directly affects the safety of the production system.

[0003] Because condensate pump motors operate at high speeds (typically rated at 1500-3000 rpm) for extended periods, factors such as impeller rotation, the impact of liquid transport, and mechanical friction cause severe vibrations during operation. Over time, this vibration not only accelerates motor housing deformation leading to breakage but also accelerates bearing wear, pipe cracking, and in severe cases, may cause shutdowns. Therefore, it is essential to provide a vibration damping device to reduce vibration in condensate pump motors during operation. Utility Model Content

[0004] This application provides a vibration damping device for a condensate pump motor, which can effectively improve the problem of severe vibration caused by impeller rotation, liquid conveying process impact, and mechanical friction of equipment during the use of the condensate pump motor.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: A vibration damping device for a condensate pump motor includes a support base mounted on the condensate pump motor, a vibration damping device installed on the support base, and an internal receiving chamber for the vibration damping device. The damping device has a receiving chamber containing damping fluid, and the damping fluid can flow freely within the damping device. The vibration damping device is fixedly connected to the support base, and the support base is fixedly connected to the condensate pump motor; a protective shell is installed on the outside of the vibration damping device.

[0006] Furthermore, the receiving chamber of the vibration damping device is fixedly provided with multiple partitions, and the multiple partitions are crisscrossed to divide the receiving chamber into multiple independent cells; each cell has an opening on the partition plate for the damping liquid to flow in and out.

[0007] Furthermore, the damping fluid is any one or more of hydraulic oil, ethylene glycol aqueous solution, silicone oil emulsion, or magnetorheological fluid.

[0008] Furthermore, the number of vibration damping devices is at least one.

[0009] Furthermore, the vibration damping device is mounted on the body of the condensate pump motor or on an auxiliary structure connected to the condensate pump motor via the support base.

[0010] Furthermore, the support base includes a bottom mounting plate, which is fixedly installed on the outside of the vibration damping device, and multiple support legs are fixedly installed on the side of the bottom mounting plate away from the vibration damping device.

[0011] Furthermore, the support leg is provided with a mounting interface at the end away from the bottom mounting plate, through which the support leg and the body of the condensate pump motor or the auxiliary structure on the condensate pump motor can be fixed together.

[0012] Furthermore, the bottom mounting plate is provided with fixing holes for connecting to the vibration damping device.

[0013] Furthermore, the protective shell and the vibration damping device are fixed together by welding.

[0014] Furthermore, the damping fluid is a magnetorheological fluid, an adjustable internal magnetic field strength electromagnetic coil is provided on the outside of the vibration damping device, a vibration sensor is installed on the condensate pump motor, and the electromagnetic coil and the vibration sensor are electrically connected.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application adds a vibration damping device to the condensate pump motor. The device is integrated with the condensate pump motor through a support base. The vibration damping device has an internal chamber filled with freely flowing damping liquid. When the condensate pump motor vibrates during use, the sloshing of the damping liquid inside the vibration damping device will generate a damping effect, thereby absorbing vibration and effectively reducing the vibration of the condensate pump motor caused by impeller rotation, liquid conveying process impact, and mechanical friction of the equipment during use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2This is a schematic diagram of the support structure of this application; Figure 3 This is a schematic diagram of the vibration device of this application; Figure 4 This is a schematic diagram showing the state of this application and the condensate pump motor during use; Figure 5 This is a schematic diagram of the structure of the condensate pump motor of this application when an electromagnetic coil is installed on the outside (the connecting cables and control modules of the relevant structures are not shown in the figure).

[0018] Reference numerals in the attached drawings: 1. Condensate pump motor; 2. Support base; 21. Bottom mounting plate; 22. Support leg; 3. Vibration damping device; 4. Protective shell; 5. Partition plate; 6. Opening; 7. Mounting interface; 8. Fixing hole; 9. Electromagnetic coil; 10. Vibration sensor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0020] like Figures 1-4 As shown, a vibration damping device for a condensate pump motor disclosed in this application includes a support base 2 installed on a condensate pump motor 1, a vibration damping device 3 installed on the support base 2, and an internal accommodating chamber for the vibration damping device 3. The damping device 3 has a receiving chamber containing damping fluid, and the damping fluid can flow freely within the damping device 3. The vibration damping device 3 is fixedly connected to the support base 2, and the support base 2 is fixedly connected to the condensate pump motor 1; a protective shell 4 is installed on the outside of the vibration damping device 3.

[0021] In the above embodiments, the condensate pump motor 1 and the vibration damping device 3 with an internal accommodating chamber are connected by a support base 2, thus forming a stable integrated structure. The accommodating chamber inside the vibration damping device 3 is pre-filled with damping fluid, which has the property of free flow within the device. When the condensate pump motor 1 vibrates during use, it vibrates along with the vibration damping device 3, and simultaneously, the damping fluid within the device 3 also sloshes synchronously. However, the damping fluid is not a rigid structure, and its connection with the vibration damping device 3 is not a traditional fixed connection. The fluid reaction force and viscous resistance generated by the damping fluid sloshing within the device 3, due to their difference from the vibration direction of the condensate pump motor 1, consume the energy generated by the impeller rotation, liquid transport impact, and mechanical friction during the operation of the condensate pump motor 1, thereby effectively improving the vibration problem of the condensate pump motor 1 during use.

[0022] With the improvement of vibration problems during operation by the vibration damping device 3 installed on the condensate pump motor 1 in this application, the problems caused by the vibration of the condensate pump motor 1, such as motor housing deformation leading to fracture, accelerated bearing wear, and pipeline cracking, can also be effectively alleviated.

[0023] When using the vibration damping device 3 of this application, it can be made into a square container with an open top, a cylindrical container with an open top, or even a container of other shapes. These can be determined directly by those skilled in the art based on actual needs without creative effort. Therefore, even if this application does not make further limitations, the technical solution of modifying the shape of the vibration damping device 3 should be considered a technical means known to those skilled in the art.

[0024] The vibration damping device 3 of this application has an internal receiving chamber with an opening at its upper end. This opening is designed to facilitate the addition of damping fluid into the receiving chamber. However, precisely because of this opening for adding damping fluid, if it is left untreated and exposed to the environment during actual production, the damping fluid can easily spill out of the device if it vibrates along with the condensate pump motor 1. This not only pollutes the environment but also reduces the total amount of damping fluid in the receiving chamber, affecting its vibration damping effect. Alternatively, if there is a high level of dust pollution in the production area, it can easily enter the receiving chamber through this opening, contaminating the damping fluid, altering its composition, and affecting its actual performance.

[0025] Therefore, this application has a protective shell 4 specially provided on the outside of the vibration damping device 3 to close the upper opening of the vibration damping device 3 filled with damping fluid. In this way, the internal chamber of the vibration damping device 3 can become a closed space, and the damping fluid is difficult to get out no matter how it shakes inside the vibration damping device 3. This is equivalent to providing a layer of protection for the damping fluid inside the vibration damping device 3.

[0026] Furthermore, such as Figure 3 As shown, multiple partitions 5 are fixedly installed in the accommodating chamber of the vibration damping device 3, and the multiple partitions 5 are crisscrossed to divide the accommodating chamber into multiple independent cells; each cell has an opening 6 on the partition 5 for the damping liquid to flow in and out.

[0027] In the above embodiments, the multiple partitions 5 in the vibration damping device 3 are crisscrossed and arranged in a grid-like pattern. These partitions 5 can further divide the accommodating chamber in the vibration damping device 3 into multiple independent cell units. Each cell unit has an opening 6 on each side wall (that is, the partitions 5 that constitute each cell unit have openings 6 on their corresponding plates). In this way, the cell units separated by the multiple partitions 5 in the vibration damping device 3 have a communication channel to connect them with their adjacent cell units.

[0028] Due to the presence of these openings 6, when the condensate pump motor 1 vibrates during operation, the damping liquid inside the vibration damping device 3 will slosh around in the containment chamber inside the vibration damping device 3. During this process, the damping liquid will generate a damping effect when it flows through the openings 6 on the partition plate 5, thus suppressing the vibration.

[0029] To further explain the above process, when the condensate pump motor 1 generates mechanical vibration, the damping fluid in the vibration damping device 3 connected to the condensate pump motor 1 will inevitably sway within the device. Due to the limiting effect of the baffle 5 and the characteristics of the damping fluid itself, a velocity gradient will be generated inside the vibration damping device 3. Friction will occur between the liquid molecules in the damping fluid and between the liquid itself and the solid wall. The macroscopic manifestation of this process is viscous resistance. This resistance will continuously "counteract" the motion generated by the vibration of the condensate pump motor 1 during its use, ultimately converting the ordered mechanical kinetic energy into disordered heat energy and dissipating it into the environment, thereby achieving the vibration reduction effect.

[0030] When installing the partition 5, it can be fixed inside the vibration damping device 3 by means of fasteners such as corner brackets and screws, or it can be fixed inside the vibration damping device 3 by welding. Users can choose the specific method flexibly, and this application does not limit it.

[0031] The openings 6 inside the vibration damping device 3 on the partition 5 are all round holes, and these openings can be set to different diameters. Each opening 6 with a specific diameter on the partition 5 will enable the damping fluid to achieve the best damping effect when swaying at a specific vibration frequency. If the openings 6 on all the partitions 5 have the same diameter, then the vibration damping device 3 as a whole is equivalent to a "tuner" that is only sensitive to vibration in a narrow frequency band. Once the vibration frequency of the motor deviates from this specific frequency band, the vibration damping effect will be greatly reduced. However, the actual vibration of the condensate pump motor 1 is quite complex, and it may generate a wide variety of vibration frequencies during operation. By setting different openings 6 with different diameters on the baffle 5, it is essentially equivalent to integrating multiple "tuners" for different frequencies into a single vibration damping device 3. (For example, the large-diameter opening 6 on the baffle 5 is more effective for low-frequency, high-amplitude vibrations. Liquid flows relatively easily through the large opening, and the resulting damping force is relatively small but stable, suitable for dissipating the large energy of low-frequency vibrations; the small-diameter opening 6 on the baffle 5 is more effective for high-frequency, low-amplitude vibrations. Liquid faces huge resistance when flowing through the small opening, which can very effectively suppress high-frequency vibrations.) Therefore, setting openings 6 with different diameters on the baffle 5 can effectively dampen the wide-spectrum vibrations generated by the condensate pump motor 1 during operation.

[0032] As for the specific number, diameter, and spacing of the openings 6, as well as the specific number and spacing of the partitions 5, this application does not limit them here, because different products will have different working conditions in actual use. Therefore, users need to determine the specific parameters according to the actual situation of the equipment they use (such as the actual vibration frequency of the condensate pump motor 1). These are operations that can be completed by those skilled in the art based on the prior art.

[0033] Furthermore, the damping fluid is any one of hydraulic oil, aqueous ethylene glycol solution, silicone oil emulsion, or magnetorheological fluid.

[0034] In the above embodiments, the specific choice of hydraulic oil, ethylene glycol aqueous solution, silicone oil emulsion, or magnetorheological fluid (other solutions with similar properties can also be flexibly selected according to the actual situation) can be determined by the user based on the actual usage environment. For example, in low-temperature environments, silicone oil or special liquids with low freezing points should be selected, while in high-temperature environments, attention should be paid to their thermal stability and volume expansion coefficient.

[0035] Furthermore, the damping fluid is a mixture of any two or more liquids selected from hydraulic oil, aqueous ethylene glycol solution, silicone oil emulsion, or magnetorheological fluid.

[0036] In the above embodiments, different types of liquids have different properties. For example, high-viscosity liquids (such as hydraulic oil or glycerin) are good at suppressing low-frequency, high-amplitude vibrations, while low-viscosity liquids (such as certain silicone oils or aqueous solutions) are more effective for high-frequency vibrations. Mixing them together is more effective for scenarios with complex vibration frequencies.

[0037] Furthermore, the number of vibration damping devices 3 is at least one.

[0038] In the above embodiments, only one vibration damping device 3 may be installed on the condensate pump motor 1, or two or more vibration damping devices 3 may be installed at the same time. The specific number needs to be determined according to the actual situation of the condensate pump motor 1 used by the user.

[0039] Furthermore, the vibration damping device 3 is mounted on the body of the condensate pump motor 1 or on an auxiliary structure connected to the condensate pump motor 1 via the support base 2.

[0040] In the above embodiments, the installation environment and usage of the condensate pump motor 1 may vary in different application scenarios. In actual application, the vibration damping device 3 of this application can be installed directly on the body of the condensate pump motor 1 or on its auxiliary structure, as long as the installed vibration damping device 3 and the condensate pump motor 1 can form a stable overall structure.

[0041] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, the support base 2 includes a bottom mounting plate 21, which is fixedly installed on the outside of the vibration damping device 3. Multiple support legs 22 are fixedly installed on the side of the bottom mounting plate 21 away from the vibration damping device 3.

[0042] In the above embodiments, multiple support legs 22 are welded to the lower side of the bottom mounting plate 21. These support legs 22 can allow the vibration damping device 3 to avoid some parts on the outer surface of these devices when connected to the condensate pump motor 1 or its auxiliary components.

[0043] Furthermore, such as Figure 2 and Figure 4 As shown, the support leg 22 has a mounting interface 7 on the end away from the bottom mounting plate 21. The support leg 22 and the body of the condensate pump motor 1 or the auxiliary structure on the condensate pump motor 1 can be fixed together through the mounting interface 7.

[0044] In the above embodiments, the mounting interface 7 on the support leg 22 can be used to firmly fix them together by inserting bolts and using nuts of the corresponding specifications when assembling them with the condensate pump motor 1 body or its auxiliary structure.

[0045] Furthermore, such as Figure 2 and Figure 4 As shown, the bottom mounting plate 21 is provided with fixing holes 8 for connecting with the vibration damping device 3.

[0046] In the above embodiments, bolts and nuts can be used to assemble and fix the device and vibration damping device 3 together through the fixing holes 8 on the bottom mounting plate 21.

[0047] Furthermore, the protective shell 4 and the vibration damping device 3 are fixed together by welding.

[0048] In the above embodiments, after the protective shell 4 is placed over the outside of the vibration damping device 3, in order to ensure the airtightness between the two and prevent the damping liquid from leaking out when shaking, the protective shell 4 and the vibration damping device 3 are assembled and fixed together by welding.

[0049] Furthermore, the damping fluid is a magnetorheological fluid.

[0050] In the above embodiments, magnetorheological fluid (MRF) is a smart responsive fluid material formed by uniformly dispersing micron-sized soft magnetic particles in a non-magnetic carrier liquid.

[0051] Magnetorheological fluids are mainly composed of three parts: soft magnetic particles (i.e., dispersed phase), base fluid (dispersion medium), and additives (stabilizers).

[0052] The soft magnetic particles (also called the dispersed phase) determine the magnetic properties of the magnetorheological fluid.

[0053] Commonly used materials for the dispersed phase include: carbonyl iron powder (particle size 1-10 micrometers), iron-cobalt alloy, iron-nickel alloy, and iron(III) oxide (Fe3O4). This component must meet the requirements of high magnetic permeability, low coercivity, and high magnetic saturation strength when selected. Carbonyl iron powder is the most widely used dispersed phase in general magnetorheological fluids because of its low production cost, high purity, and narrow particle size distribution.

[0054] The carrier fluid (i.e., the dispersion medium) in magnetorheological fluids is mainly responsible for carrying the continuous phase of magnetic particles. This substance affects the fluidity and stability of the magnetorheological fluid.

[0055] Commonly used base carrier liquid materials include silicone oil, mineral oil, synthetic oil, ionic liquid, etc. Among them, methyl silicone oil is the most widely used because it has a wide viscosity range and a wide operating temperature range (-50 to 180℃).

[0056] As for additives (stabilizers) in magnetorheological fluids, they can generally be divided into anti-precipitating agents, surfactants, and anti-wear agents. The main function of this component is to improve the overall performance of the magnetorheological fluid, and its content is usually less than 5%. Commonly used magnetorheological fluid additives include oleic acid, stearic acid, and nano-silica.

[0057] The reasons for favoring magnetorheological fluid as the damping fluid in this application include: the high yield stress characteristic of magnetorheological fluid can enhance the damping effect of the opening 6 on the partition 5, making it particularly suitable for impact loads (such as water hammer); moreover, magnetorheological fluid is generally resistant to high and low temperatures and corrosion, making it suitable for the high-temperature and humid environment of thermal power plants; in addition, this type of damping fluid has strong anti-fouling ability, which will result in a longer service life; finally, and most importantly, the viscosity of magnetorheological fluid can be adjusted by applying magnetic fields of different intensities.

[0058] Furthermore, such as Figure 5 As shown, an electromagnetic coil 9 with adjustable internal magnetic field strength is provided on the outside of the vibration damping device 3, and a vibration sensor 10 is installed on the condensate pump motor 1. The electromagnetic coil 9 and the vibration sensor 10 are electrically connected.

[0059] In the above embodiments, the electromagnetic coil 9 is also called an inductor coil. According to common electrical knowledge, when the electromagnetic coil 9 is energized, a magnetic field will be generated inside it. In this application, the electromagnetic coil 9 is installed on the outside of the vibration damping device 3, which means that the damping liquid inside the vibration damping device 3 will be in the magnetic field generated by the electromagnetic coil 9.

[0060] As can be seen from the previous embodiment, the damping fluid used in this application is a magnetorheological fluid. A special ability of magnetorheological fluid is that when a magnetic field is applied, the magnetic particles inside it will be magnetized and arranged into a fibrous chain structure along the magnetic field lines, which will hinder the flow of the liquid and cause the apparent viscosity to increase significantly. Moreover, its viscosity is positively correlated with the electromagnetic intensity.

[0061] According to Ampere's law, the magnetic field strength of the electromagnetic coil 9 is directly proportional to the current flowing through it. That is, as the current flowing through the electromagnetic coil 9 gradually increases, the magnetic field will also gradually increase. The magnetic particles (such as carbonyl iron powder) in the magnetorheological fluid arrange themselves into a chain-like structure along the magnetic field lines, increasing the shear stress of the liquid and thus improving the damping force. Correspondingly, when the current gradually decreases, the magnetic field will also gradually weaken until the chain disintegrates and the viscosity of the magnetorheological fluid will return to its initial state.

[0062] As can be seen from the above, the intensity of the magnetic field inside the electromagnetic coil 9 can be adjusted simply by adjusting the magnitude of the current flowing through it. The condensate pump motor 1 itself vibrates in a complex manner during operation, not continuously maintaining a specific frequency. The magnetic flux fluid installed in the vibration damping device 3 of this application can adjust its viscosity by changing the magnetic field intensity of the electromagnetic coil 9. Thus, in actual use, when the condensate pump motor 1 vibrates at different frequencies, adjusting the current in the electromagnetic coil 9 allows the magnetic flux fluid to change to its most suitable viscosity state, significantly improving the effectiveness of the device on the condensate pump motor 1.

[0063] Manually controlling the current of the electromagnetic coil 9 is not only inefficient but also increases labor costs. Therefore, this application adds a vibration sensor 10 to the condensate pump motor 1 and electrically connects the vibration sensor 10 to the electromagnetic coil 9. More specifically, the vibration sensor 10 is electrically connected to the control module of the electromagnetic coil 9. The control module is preferably an embedded MCU (an MCU is a chip that integrates a microprocessor core, memory, and peripheral interfaces, mainly used to control the operation of embedded systems. Compared with traditional computer processors, MCUs focus on low power consumption, low cost, and small size, making them suitable for resource-constrained applications). This control module can be integrated in the factory's control center, making on-site operation and maintenance more convenient.

[0064] The vibration sensor 10 installed on the condensate pump motor 1 can collect data such as the vibration frequency of the condensate pump motor 1 in real time and transmit the relevant data to the control module of the electromagnetic coil 9. When the control module (such as an embedded MCU) receives the data transmitted by the vibration sensor 10, it will analyze the relevant data and adjust the current of the electromagnetic coil according to the relevant data, thereby automatically adjusting the viscosity of the magnetic flux fluid according to the vibration frequency of the condensate pump motor 1 to achieve the best vibration reduction effect on the condensate pump motor 1. For example, when the vibration sensor 10 detects that the vibration frequency of the condensate pump 1 enters the dangerous frequency band (such as the frequency corresponding to the critical speed of the motor), it automatically increases the current of the electromagnetic coil 9 to enhance the damping; conversely, during steady-state operation, it reduces the current to achieve energy saving.

[0065] The electromagnetic coil 9 of this application is not limited to being placed on the outside of the vibration damping device 3 during processing. It can also be integrated on the inside of the protective shell 4 or on each partition 5. The user can flexibly adjust the specific method, as long as the magnetic field generated after being energized can completely cover the magnetorheological fluid in the vibration damping device 3.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vibration damping device for a condensate pump motor, comprising a support base (2) mounted on a condensate pump motor (1), characterized in that: A vibration damping device (3) is installed on the support base (2), and the vibration damping device (3) has an internal accommodating chamber; The damping device (3) has a damping liquid in its accommodating chamber, and the damping liquid can flow freely in the damping device (3). The vibration damping device (3) is fixedly connected to the support base (2), and the support base (2) is fixedly connected to the condensate pump motor (1); a protective shell (4) is installed on the outside of the vibration damping device (3).

2. The condensate pump motor vibration damping device according to claim 1, characterized in that: The damping device (3) has multiple partitions (5) fixedly installed in the accommodating chamber, and the multiple partitions (5) are crisscrossed to divide the accommodating chamber into multiple independent cells; each of the partitions (5) corresponding to the cell has an opening (6) on its plate for the damping liquid to flow in and out.

3. The condensate pump motor vibration damping device according to claim 2, characterized in that: The damping fluid is any one of hydraulic oil, ethylene glycol aqueous solution, silicone oil emulsion, or magnetorheological fluid.

4. The condensate pump motor vibration damping device according to claim 1, characterized in that: The number of vibration damping devices (3) is at least one.

5. The condensate pump motor vibration damping device according to claim 4, characterized in that: The vibration damping device (3) is installed on the body of the condensate pump motor (1) via the support base (2) or on an auxiliary structure connected to the condensate pump motor (1).

6. The condensate pump motor vibration damping device according to claim 5, characterized in that: The support base (2) includes a bottom mounting plate (21), which is fixedly installed on the outside of the vibration damping device (3). Multiple support legs (22) are fixedly installed on the side of the bottom mounting plate (21) away from the vibration damping device (3).

7. The condensate pump motor vibration damping device according to claim 6, characterized in that: The support leg (22) has an installation interface (7) on one end away from the bottom mounting plate (21). The support leg (22) and the main body of the condensate pump motor (1) or the auxiliary structure on the condensate pump motor (1) can be fixed together through the installation interface (7).

8. The condensate pump motor vibration damping device according to claim 7, characterized in that: The bottom mounting plate (21) is provided with fixing holes (8) for connecting with the vibration damping device (3).

9. The condensate pump motor vibration damping device according to any one of claims 1 to 7, characterized in that: The protective shell (4) and the vibration damping device (3) are fixed together by welding.

10. The condensate pump motor vibration damping device according to claim 3, characterized in that: The damping fluid is a magnetorheological fluid. An electromagnetic coil (9) with adjustable internal magnetic field strength is provided on the outside of the vibration damping device (3). A vibration sensor (10) is installed on the condensate pump motor (1). The electromagnetic coil (9) and the vibration sensor (10) are electrically connected.

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